JP2008038375A - Structure of long rod-like connecting shaft for operating member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the unsmoothing of rotational operations of operating members to the utmost, even on the occurrence of incompatibility between shaft portions of the inside and outside operating members. <P>SOLUTION: In this structure of a long rod-like connecting shaft for the operating member, which passes through circular shaft holes of right and left side walls of a lock case, a fitting portion corresponding to an out-of-round portion-to-be-fitted of the operating member is formed at the base end of the connecting shaft; a first portion with a perfectly-circle cross section is provided in such a manner as to continue into the fitting portion; subsequently, an out-of-round engaging portion, which is engaged with a part of an inner surface of a through-hole of a cam member externally fitted to an approximately central portion of the connecting shaft provided in such a manner as to continue into the first portion, is formed; and after that, a second portion of the same shape as that of the first portion is provided in such a manner as to continue into the out-of-round engaging portion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure of an elongated connecting shaft for an operation member.

  FIGS. 1 to 3 of Patent Document 1 show left and right operation members (for example, lever handles), an elongate connection shaft (square shaft) that connects these operation members, and a central portion of the connection shaft that passes therethrough. A cam member (cylindrical body 31 in Reference 1) that fits outside, and a handle rattling preventer (square tube spacer 33 in Reference 1) that fits into the cam member and fits to the connecting shaft are described. Yes.

  This patent document 1 is similar to patent document 2 in that “a long rod-shaped angular axis, a pair of left and right operating members respectively attached to both ends of the angular axis, and a center part of the angular axis are externally fitted. In addition, the present invention relates to a shaft fitting structure for a handle member comprising a cam member (commonly referred to as “Dharma”) for pulling back a locking mechanism (for example, a latch rod).

  Here, FIG. 9 shows a configuration of a normal and generally elongate connecting shaft (angular axis) used in Patent Document 1, Patent Document 2, and the like. As shown in FIG. 9, the long rod-shaped connecting shaft is generally formed as a square bar shape from one base end 1 a to the other base end 1 b, and therefore is generally called “square shaft”. ing.

  A press-fitting small hole 2 is formed in the base end portion 1 a of the square shaft 1. A square mounting hole 4 into which the base end portion (outer end portion) 1a is fitted is formed in the shaft portion 3a of one lever handle 3 as an operation member. It is a known matter that the operation member 3 is fixed to the base end portion 1a of the square shaft 1 by inserting a fixing pin 6 into a through-hole fixing hole 5 formed in the shaft portion 3a.

  Although not particularly shown, a through hole for fixing means is also formed in the shaft portion of the other lever handle, and the other base end portion (inner end portion) 1b of the square shaft 1 coincides with the through hole. A hole 7 is formed.

  By the way, the angular shaft 1 has one big problem in the sliding contact relationship with the circular shaft holes and cam members (for example, dharma) on the left and right side walls of the lock box. The problem is that when the operation member is operated, a “so-called uncomfortable feeling” may occur due to the installation, the attachment positions of the inside and outside members, and the like. The reason will be described with reference to FIG.

11 is a door provided at the entrance of the entrance and the room, 12 is a mounting seat inside and outside, 13 is an operation member inside and outside, 14 is a lock box fixedly installed at the free end of the door 11, and 1 is It is a long rod-shaped square shaft 1 that directly or indirectly penetrates the circular shaft hole 15 of the opposite side wall 14a of the lock box 14.
In this conceptual diagram, a cam member (for example, a dharma) 16 is externally fitted to the center portion of the long rod-shaped square shaft 1, and the left and right boss portions 16a of the cam member 16 are circular shaft holes 15 or bearings of the opposing side wall 14a. The part 17 is rotatably supported.

  Accordingly, the long rectangular shaft 1 having the left and right base ends 1a and 1b is indirectly supported by the circular shaft hole 15 of the lock box 14 through the cam member 16 having the square hole 16b.

  By the way, if the angular shaft 1 is slightly inclined with respect to the horizontal axis L due to the installation, the mounting positions of the inner and outer members, etc., the circular shaft hole 15 of the opposing side wall 14a and the boss of the cam member 16 The frictional resistance with the portion 16a increases, and the operation feeling becomes awkward when any one of the operation members 13 is operated (a so-called unnatural feeling is generated).

Such a sense of incongruity occurs not only when the cam member 16 (eg, dharma) 16 shown in the conceptual diagram but also when an internal / external sumter member provided on an indoor door such as a toilet is operated. Therefore, it is currently desired to solve the above-mentioned problems that occur when operation members such as a handle and a thumber are respectively attached to the base end portion of the elongate rectangular shaft 1.
JP 2006-77459 A JP 2006-70620 A

  The intended purpose of the present invention is when the long shaft-like connecting shaft with the inner and outer operating members attached to the base end is slightly inclined due to the installation, the mounting position of the inner and outer members, etc. This is to prevent the operation member from rotating as much as possible even when there is a mismatch in the shaft portion of the member. The second purpose is to support a cam member (for example, a rotary locking piece for a dharma or a latch member) on the opposite side wall of the lock box, and to support the cam on the long connecting shaft passing through the lock box. Even if the members are externally fitted, the intended purpose can be achieved.

  The structure of the long connecting shaft for the operating member of the present invention is the structure of the long connecting shaft for the operating member that passes through the circular shaft holes in the left and right side walls of the lock box. Is formed with a fitting portion corresponding to the non-circular fitting portion of the operation member, and a first portion having a perfectly circular cross section is connected to the fitting portion, and then connected to the first portion. A non-circular engaging portion that engages with a part of the inner surface of the through hole of the cam member that fits outside is formed at a substantially central portion of the connecting shaft to be provided, and then the engaging portion is the same as the first portion. The second part of the shape is provided continuously.

  In the above configuration, the left and right boss portions of the cam member are rotatably supported by the circular shaft hole or the bearing portion of the opposite side wall of the lock box, and the non-circular engagement portion of the connecting shaft is the inner surface of the through hole of the cam member. It is characterized by engaging with the substantially central part. Other objects and novel features are objectively determined from the description of the present specification and the accompanying drawings.

  A non-circular engaging portion (for example, a polygonal portion) that engages with a part of the inner surface of the through hole of the cam member is formed at the center portion of the elongated connecting shaft, and this non-circular engaging portion is used as a reference. Since the first part and the second part having a perfectly circular cross section are provided on the left and right sides of the connecting shaft in the axial direction, the long shaft-like connecting shaft is caused by the installation position of the internal and external members, etc. Even if it is slightly tilted (when the shaft portions of the inner and outer operating members are inconsistent), the rotating operation of the operating member is not as astringent as possible. This effect is achieved by having a cam member (for example, a dharma, a rotation locking piece for a latch member) pivotally supported on the lock box on the opposite side wall of the lock box, and on the long connecting shaft penetrating the lock box. This is remarkable when the members are externally fitted.

  Hereinafter, the best mode (first embodiment) for carrying out the present invention shown in FIGS. 1 to 7 will be described.

(1) Environment for carrying out the invention The environment for carrying out the invention will be briefly described with reference to FIGS. For convenience of explanation, the same parts as those of the conventional environmental member shown in FIGS. 9 and 10 are denoted by the same or similar reference numerals, and redundant description is omitted.

  11A is an indoor door, 12A is an inside / outside mounting seat, 13A is an inside / outside thumb turn member, 14A is a lock box, 14a is a side wall of the lock box (side wall and case cover), and 15 is horizontal to the left and right side walls 14a. A pair of left and right circular shaft holes 16A formed so as to be positioned on the axis line, 16A, are cam members that are externally fitted to the center portion of the eaves.

  The cam member 16A of the present embodiment is a member that constitutes a part of a latch mechanism or a temporary locking mechanism of a latch member such as a dead latch or an inverted rat, and as shown in FIG. 2, the left and right boss portions of the cam member 16A 16a is rotatably supported by the circular shaft hole 15 or the bearing part 17 of the opposing side wall 14a of the lock box 14A.

  The connecting shaft 1A of the present invention also penetrates the cam member 16A in the same manner as the conventional square shaft, and thumb turn members 13A and 13A are appropriately attached to the left and right base end portions via inner and outer thumb turn washers 18.

  In FIG. 1, reference numeral 19 denotes an outer handle, 20 denotes an inner handle, 21 denotes a long connecting shaft for connecting the inner handle and the outer handle (here, “for handle” is distinguished from the connecting shaft 1A). It is referred to as a connecting shaft 21 ”.

(2) Structure of connecting shaft 1A FIG. 3 shows the structure of the connecting shaft 1A as a main part. The connecting shaft 1A is directly related to the inner and outer operation members 13A and the cam member 16A.

  That is, with reference to FIG. 3, a non-circular fitting portion 32 corresponding to the non-circular fitting portion 31 of the inner operation member 13A is formed at the right base end portion of the connecting shaft 1A. As shown in FIG. 4, a first portion 33 having a perfectly circular cross section is connected to the non-circular fitting portion 32, and then at a substantially central portion of the connecting shaft 1 </ b> A connected to the first portion 33. A non-circular engagement portion 35 that engages with a part of the inner surface 34 (see FIG. 5) of the through-hole of the cam member 16A to be fitted externally is formed. A second portion 36 having the same shape as that of the first portion 33 is continuously provided. Further, a non-round fitting portion 38 corresponding to the non-round fitting portion 37 of the outer operation member 13A is provided on the second portion 36. Is formed.

  Thus, in the embodiment, the inner and outer operation members 13A are thumb turn members including knobs that are often found on, for example, indoor toilet doors, etc., and therefore the indoor operation member 13A is removed from the indoor mounting seat 12A. On the other hand, the outdoor operation member 13A on the outdoor side is flush with the mounting seat 12A on the outdoor side.

  Therefore, the non-round-shaped fitting portions (fitting holes) 31 and 37 of the pair of rotatable operation members 13A and 13A are, for example, square holes. Therefore, the non-circular fitting portion 32 at the right base end portion that fits into the non-circular fitting portion 31 of one operating member 13A corresponds to the shape of the fitting portion 31 of the operating member 13. It has a short angular axis. Similarly, the non-circular fitting portion 38 at the left base end portion that fits into the non-circular fitting portion 37 of the other operation member 13A is also a short angular shaft portion.

  Naturally, the shape and length of both base end portions 32 and 38 of the connecting shaft 1A are designed in consideration of the shape of the non-circular mated portion 31 of the operating member 13A and the depth of the hole. Yes. Therefore, when the shape of the non-circular fitting portion 31 is an elliptical shape or the like, the shape of the base end portion is also an elliptical shape or the like corresponding thereto. In addition, both the base end parts 32 and 38 of 1 A of connecting shafts of a present Example may just be inserted in corresponding operation member 13A, 13A, and do not make a fixing means a limiting requirement.

  Next, in this embodiment, the non-circular engagement portion 35 that engages with a part of the through hole inner surface 34 of the cam member 16A is substantially the same as the through hole inner surface 34 of the cam member 16A, as shown in FIG. Engage with the center.

  Therefore, the first portion 33 having a perfectly circular cross section provided in the axial direction to the non-circular fitting portion 32 and the second portion 36 provided in the axial direction to the non-circular engaging portion 35 are connected to the connecting shaft. As long as 1A does not tilt to a predetermined amount, it does not contact the left and right portions of the inner surface 34 of the through hole.

  In addition, a slight permissible gap 40 between which the connecting shaft 1A can be inclined slightly between the outer peripheral surfaces of the first portion 33 and the second portion 36 and the angular inner peripheral surfaces of the left and right portions of the inner surface 34 of the through hole. Is set. Although it is extremely shown in FIG. 5, when a mismatch occurs between the shaft portions of the inner and outer operation members, for example, the first portion 33 on the right side in the drawing is in a floating state, while the second portion on the left side in the drawing. 36 is inclined downward. Therefore, even if the outer peripheral surfaces of the first portion 33 and the second portion 36 having a perfectly circular cross section rub against the inner surface 34 of the square through hole of the cam member 16A, the contact point is round (circumferential direction). The intended object of the present invention can be achieved.

  6 and 7 are explanatory views showing an example of the cam member 16A. As described above, the boss portions 16a protrude from the left and right ends of the wide cylindrical outer fitting portion 41 of the cam member 16A, and these boss portions 16a are formed in the circular shaft hole 15 or the bearing portion 17 of the opposing side wall 1a. Is supported rotatably.

  The unnumbered through hole of the cylindrical outer fitting portion is a square hole as shown in the drawing, and the non-circular engagement portion 35 at the substantially central portion of the connecting shaft engages with the inner surface 34 of the through hole. An engagement piece 42 for locking a latch member (not shown) is provided at an appropriate portion of the outer surface of the cylindrical outer fitting portion 41 of the cam member 16A.

  FIG. 8 shows a second embodiment of the present invention. In the first embodiment shown in FIG. 3 and the like, non-round fitting portions corresponding to the non-round fitting portions 31 and 37 of the operation members 13A and 13A are provided at the left and right base ends of the connecting shaft 1A, respectively. 32 and 38 are formed, and the operation member 13A is an inner and outer thumb turn member.

  On the other hand, the handle connecting shaft 21 of the second embodiment has non-round fitting portions (corresponding to non-round fitting portions of the inner and outer operation members 20, 19 at the left and right base ends, respectively. (Angular shaft portion) 32A, 38A is formed, and a non-circular engagement portion 35A that engages with a part of the through hole inner surface 34A of the cam member (Dalma) 16B is formed at the center portion. The first and second portions 33A and 36A having a perfect circular cross section are formed between the non-circular engaging portion 35A and the left and right non-circular fitting portions 32A and 38A. The same as one embodiment.

  However, the connecting shaft 21 for the handle is different from that for the inner and outer handles 20 and 19.

  Therefore, in the non-circular fitting portions 32A and 38A having a square axis shape of the connecting shaft 21 for the handle, the press-fitting hole 5A for the fixing pin 6A and the fixing tool 10 are provided as in the conventional example shown in FIG. Are respectively formed.

  The present invention is mainly used in the joinery industry and the lock industry.

1 to 7 are explanatory views showing the best embodiment (first embodiment) of the present invention. FIG. 8 is a schematic explanatory view showing a second embodiment of the present invention, and FIGS. 9 and 10 are explanatory views showing conventional embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows an example of the whole environment of implementation of this invention. The schematic cross-section explanatory drawing which shows an example of the environment of implementation of the principal part. Explanatory drawing which shows the relationship between a connection shaft and another member from a perspective view. FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. The schematic explanatory drawing which shows the contrast of the inclination state of a connecting shaft. Explanatory drawing from one side of a cam member. Explanatory drawing from the other side of a cam member. The schematic explanatory drawing which shows 2nd Example of this invention. Explanatory drawing which shows the conventional Example from a perspective view. FIG. 3 is a schematic cross-sectional explanatory view similar to FIG. 2 of the conventional example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1A ... Connecting shaft, 5A ... Press-fit hole, 6A ... Fixing pin, 7A ... Screw hole, 10 ... Fixing tool, 11A ... Indoor door, 12A ... Inside / outside mounting seat, 13A ... Inside / outside thumb turn member (an example of operation member), 14A ... Lock box, 14a ... Opposite side wall of lock box, 15 ... Pair of left and right circular shaft holes, 16A ... Cam member, 16B ... Cam member (Dalma), 16a ... Boss portion, 17 ... Bearing portion, 19 ... Outer handle, DESCRIPTION OF SYMBOLS 20 ... Inner handle, 21 ... Connecting shaft for handle, 31 ... Non-circular fitting portion, 32, 38, 32A, 38A ... Fitting portion, 33, 33A ... First part, 34, 34A ... Through hole Inner surface, 35, 35A ... non-circular engaging portion, 36, 36A ... second portion, 40 ... allowable gap, 41 ... cylindrical outer fitting portion, 42 ... engaging piece.

Claims (4)

In the structure of the long connecting shaft for the operating member that passes through the circular shaft holes on the left and right side walls of the lock box, the base end of the connecting shaft corresponds to the non-circular fitted portion of the operating member. A first portion having a perfectly circular cross section is connected to the fitting portion, and then a cam member that is externally fitted to a substantially central portion of a connecting shaft that is continuous to the first portion. A non-circular engaging portion that engages with a part of the inner surface of the through hole is formed, and then a second portion having the same shape as the first portion is connected to the engaging portion. Structure of a long connecting shaft for an operation member. 2. The left and right boss portions of the cam member are rotatably supported by circular shaft holes or bearing portions of the opposite side wall of the lock box, and the engaging portion of the connecting shaft is substantially at the center of the inner surface of the through hole of the cam member. The structure of the elongate connection shaft for the operating member characterized by being engaged with the portion. In Claim 1, the fitting part corresponding to the non-circular-shaped fitting part of an operation member is formed in the right and left base end part of a connecting shaft, respectively, Moreover, the said operation member is an internal and external thumb turn member. A structure of an elongate connecting shaft for an operating member, characterized in that there is. In Claim 1, the fitting part corresponding to the non-circular fitting part of an operation member is respectively formed in the right-and-left base end part of a connecting shaft, and the said operation member is an internal / external handle. A structure of an elongated connecting shaft for an operating member.

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